Mechanical fabric softener



FIG. 1 is a bottom view of a mechanical fabric softener, showing my new design;

FIG. 2 is a side elevation thereof, all sides being identical;

FIG. 3 is a top view thereof;

FIG. 4 is a top perspective view thereof; and,

FIG. 5 is a perspective view thereof.

The broken lines shown in the drawings are for the purpose of illustrating unclaimed portions of the mechanical fabric softener and form no part of the claimed design. 

The ornamental design for a mechanical fabric softener, as shown and described. 